盐酸麻黄碱的单扫描示波极谱测定  

Determination of Ephedrine Hydrochloride with Single-Sweeping Osillopolarography

作　　者：徐泽民[1] 李文洪[1] 

机构地区：[1]四川大学化学学院,成都610064

出　　处：《四川大学学报（自然科学版）》2004年第1期218-220,共3页Journal of Sichuan University(Natural Science Edition)

摘　　要：The authors had reported the determination of ephedrine by osillopolarography.In acetate buffer（pH 4.0） ephedrine reacted with nitrite to form N-nitrosoephedrine.The reaction needed only 2 minutes with a boiling water bath.After removing excessive nitrite,N-nitrosoephedrine gave a well polarographic reductive wave at -0.82V（vs.SCE） in acidic medium.The linear relationship between the concentrations of ephedrine and the peak currents of the osillopolarographic wave was proportional in the range of 0.10～200×10-6 （g/mL.）The method was sensitive,rapid and simple.It had been applied to determine ephedrine in pharmaceuticals with satisfactory results.The authors had reported the determination of ephedrine by osillopolarography.In acetate buffer(pH 4.0) ephedrine reacted with nitrite to form N-nitrosoephedrine.The reaction needed only 2 minutes with a boiling water bath.After removing excessive nitrite,N-nitrosoephedrine gave a well polarographic reductive wave at -0.82V(vs.SCE) in acidic medium.The linear relationship between the concentrations of ephedrine and the peak currents of the osillopolarographic wave was proportional in the range of 0.10～200×10^(-6) (g/mL.)The method was sensitive,rapid and simple.It had been applied to determine ephedrine in pharmaceuticals with satisfactory results.

关 键 词：盐酸麻黄碱 单扫描示波 中药 极谱测定 

分 类 号：R282[医药卫生—中药学]